Friction draft-rigging for railway-cars.



, n '3. F. O'GONNOR.

.PRICTION DRAFT RIGGING FOR RAILWAY GARS.

APPLIOATIONIILED JULY 22,1012.

1,065,072,I V Patented 511116111913.

SSHEETS-SHEBT l.

INVENTOR 3 SHEETS-SHEET 2.

- Patented m1116517, 1913.'

4 J.F.WCONNOR APPLICATION FILED JULY22,191&

INM NN wm n FRICTION DRAFT RIGGING FORJRAILWY GARS.

V lHI] INVENTOR J/m f'. 03m/wh By h I WITNESSES J. P. GGONNOR.

- FBIGTION DRAFT RIGGING FOR RAILWAY-GARSi APILIUATION FILED JULY 22,11912.-

3 SEEETS-SHEET 3'.

W ITNESSES INVENTOR Unirse srnrns 'rnrnnr onirica.

JOHN r. ocoNNonQ-or CHICAGO, ILLINOIS, AssIsNoR rro WILLIAM II. MINER, or CHICAGO, iLLINoIs.

FRICTION DRAFT-HIGGINS: FOR RAILWAY-CARS.

Patented J une 17, 1913.

To .all whom t may concern:

Be it known that-I, JOHN F. OCONNOR,

a citizen of theUnited States, residing at Chicago, inthe county of Cook and State of'Illinois, have invented a certain. newand useful Improvement' in Friction Draft-Rigging forRailway-Cars, of which the fellowingv is a full,.clear, concise, andy exact description, reference being vhad to the accompanying drawings, forming a part of this specification.

friction draft rigging for railway cars."

More particularly itrelates to that kind of friction draft rigging employing a ,longi-- tudinally movable friction shell containing segmental friction shoes which are spread apart by a wedge, and withy anti-friction rollers interposed betweenthe friction shoes and the wedge.

' The object of my inventionis to provide a friction draft rigging in 4which accident-al.

or other variations in the frictionalresistance between the friction shoes and the friction shell may be compensated 'for by Variations in the-outward wedging pressure applied to the friction shoes. I- accomplish this object by providing the draft rigging with a wedge of novel construction in Which the faces contacting with the friction rollers automatically adjust themselves at varying angles to suit the immediate wedging or' spreading requirements in the practical operation of the draft rigging.' In this my invention consists.

It further consists in .the `'novel construction of parte and devices," and in the vnovel combination of parts and devicesv herein. shown` and described.

the accompanying drawings forming a part of this specification' Figure l isa plan view partly in longitudinal horizontal section of a friction draft rigging embodying my invention. Fig.v 2 is a side elevation partly in'longitudinalsection. ig. 3 is an enlar ed detail of the friction shell and conarts in side .elevation partly. in longitu inal section showing the parts within the shell in normal position. Fig. dis

'a detail front elevation of the friction shell,l 'friction shoes andwedge." Fig. 5 is a. detailf of the friction shell and vcontained parts ,in 1f side elevation partly in longitudinal 'section showing the pcsitionoithepmts when vvof one of the wedged plates.

4My l'nvention relates to'iiiiprovements in i* `In the drawings 12, 12. represent the draft fully compressed within the friction s'iell. Fig. is a cross section on. line 6 6 of Fig. 5. Fig. 7 is a detail perspective view of one of the friction shoes showing the inner side thereof. Figs. VSand 9 are detail perspective views of a portion of the wedge, Fig. 8 'showing the front cr outerv end thereof, and Fig. 9 the rear or inner end. Fig. :10 is a perspective view of one of the friction rollers, and Fig. 11 is a detail perspective view sills or members of the car frame to which the draft rigging is, applied; 13 the tie plate which serves to support the gear between the draft sills; 14 the draw bar; v15 the dr-aft yoke; 16 the draft lugs or stop ineinbers secured to the,draft sills; 17 and 18 yfront and rear vfollowers respectively.

19v is a longitudinally movable friction shell interposed between the followers, preferably cylindrical in Shape,and having an internal friction face 20'. i

2l are segmental lfriction shoes, preferably threexin. number, each having an external friction face 22 in sliding frictions-1 lengagement with the internal friction face of thefshell 19, and each having an inclined or 4 wedged Aface 23.

'24 isa wedge consisting of .the block 25 .andthe wedge plates 26. The block 25 of the wedge 24 is preferablythree faced or ,pyramidah' and the wedge plates 26 are preferably three in number, one adjacent to each of the sidesof the block 25. The

block 25 is provided 'at its forward end with the flat transverse member 27 in the rear surface of which are disposed the slots or recesses 28, each of which receives`a` Wedge plate 26.

The' wedgepplate 26 is of resilient material,'preferably fiat spring steel, and pref# erablv of the oblong shapeillustrated in Fig. 11 o'f the drawings. The sameis suitably bent sC that the 'forward rtion- 29 of its inner face rests against `theadjacent face 30 ofthe wedge, which is substantially, ar-

. allel to the amis of .the 'iction shell.` e

rear or inner endof-thgj wedge'is providedv the shoulders 31, Fifnoiitrof-each of which'the 'wedge is vprovided with'fthe transf,- .verse depression 32, the. forward side of which depression Aforms the oblique face 133. 'The end of the wedge plate 26 is turned inwardly in the depression 32, and in the normal position of the gear is in substantially the 'location illustrated in Fig. 3 of the drawings. The wedge plate 26 is of suitable length to permit the rear portion 34 of its inner face to be flexed against the surface 33, as illustrated in Fig. 5.

Between the bearing surface 35 of each wedge plate and the wedge face 23 of the adjacent friction shoe 21 is interposed an antifriction roller 36, the rollers and wedge plates corresponding in number to the friction shoes. The block 25 o f the wedge may be made of any suitable material, preferably malleable iron, and is provided at its forward end with the recess v37 to receive the head 38 of the connecting rod 39.

40 and el are the inner and outer springs respectively, seated at their rear ends against the friction shell and at their forward ends against the friction shoes.

In normal position, as illustrated in Fig. 3 of the drawings, the wedge plates form an acute angle with the axis of the shell. Upon compressing movement rof the shell the wedge plates will flex inwardly to some degree, the extent of the flexing movement being dependent upon the degree of force applied. The more the wedge plates are flexed the more obtuse will be the angle thereof with the longitudinal axis of the shell, and the direction of the wedging or spreading pressure transmitted through the friction rollers -from the wedge to the friction shoes will tend toward the longitudinal axisof the shoes and away from the transverse axis, that is, the direction of thrust from the wedge to thel shoes willrtend. toward the longitudinal axis of the shoes. The surface 33 of the wedge limits the flexing movement of the wedge plates 26.

I claim 1. In a railway friction draft rigging, a wedge comprising a block and resilient plates connected therewith, the said block being provided with depressions into which the resilient plates may be llexed. Y

2. In a friction draft rigging, a wedge comprising a pyramidal block and resilient bearing plates, the block being provided with slots to receive said bearing plates.

3. In a railway friction' draft rigging, segmental friction shoes, a wedge and friction rollers between the wedge and the shoes, the said wedge having faces for the rollers to bear against, the angle Iof said faces to the friction shoes being changeable 'under load.

4. In a railway friction draft-rigging, the

combination of the draw bar, draft sills, stop members, followers, draft yoke, friction shell and friction rollers, and friction shoes within the shell, with awedge provided with resilient plates for the rollers to bear against, thesaid plates being arranged to adjust-. their bearing surfaces at varying angles to the friction shoesupon the variation of the frictional pressure between the shoes and the shell.

5. In a railway friction draft rigging, the combination with the draw bar, draft sills, stop members, followers, draft yoke, friction shell and friction shoes, and friction rollers within the shell, of a wedge comprising a block provided with' depressions, and resilient pla-tes extendiniT into said depressions and capable of being flexed therein, the rolls bearing between the friction shoes and the wedge, and the spreading force of the wedge varying with Variations in the frictional plrlelssure betweenthe friction shoes and the s e l.

6. In a railway friction draft rigging, a friction shell and friction shoes, friction rolls and a wedge within the shell, the wedge being provided with resilient bearing plates in engagement with the friction rolls.

7. In a railway friction draft rigging, friction shell and friction shoes, friction rolls and a wedge within the shell, the wedgebeing provided with yielding bearing plates, and the rolls being in engagement.

between`the bearing plates and the friction shoes.

JOI-IN F. OCQNNOR. Witnesses:

JOHN A. MARTINKUa ELEANOR L. NASH.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

